FCPY Copy 8-bit floating-point immediate to vector elements (predicated) Copy a floating-point immediate into each active element in the destination vector. Inactive elements in the destination vector register remain unmodified. Green True True True This instruction is used by the alias FMOV (immediate, predicated) Unconditionally The alias is always the preferred disassembly. 0 0 0 0 0 1 0 1 0 1 1 1 0 FCPY <Zd>.<T>, <Pg>/M, #<const> if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then UNDEFINED; if size == '00' then UNDEFINED; constant integer esize = 8 << UInt(size); constant integer g = UInt(Pg); constant integer d = UInt(Zd); constant bits(esize) imm = VFPExpandImm(imm8, esize); <Zd> Is the name of the destination scalable vector register, encoded in the "Zd" field. <T> Is the size specifier, size <T> 00 RESERVED 01 H 10 S 11 D
<Pg> Is the name of the governing scalable predicate register, encoded in the "Pg" field. <const> Is a floating-point immediate value expressible as ±n÷16×2^r, where n and r are integers such that 16 ≤ n ≤ 31 and -3 ≤ r ≤ 4, i.e. a normalized binary floating-point encoding with 1 sign bit, 3-bit exponent, and 4-bit fractional part, encoded in the "imm8" field.
CheckSVEEnabled(); constant integer VL = CurrentVL; constant integer PL = VL DIV 8; constant integer elements = VL DIV esize; constant bits(PL) mask = P[g, PL]; bits(VL) result = Z[d, VL]; for e = 0 to elements-1 if ActivePredicateElement(mask, e, esize) then Elem[result, e, esize] = imm; Z[d, VL] = result;